cutting a tree will make a big disaster but human never think about the future human life they think about the only present life of living so it will bring a total disaster.
Human, only they realise after it starts happening to kill human life. prevention is better than cure.
If you want to change the world then you must change yourself. the problem is inside of each and every one of the human beings they only think they want to live a rich life for that they destroy everything they don’t think about their future generations will get destroyed in front of their own eyes because of disease.